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-
- 3.1.11 SELECT ENVIRONMENT
-
-
- The SELECT ENVIRONMENT command contains a number of options allowing you to
- alter various environmental variables within X-CAD.
-
-
- MODIFIERS
-
- AUTOMENUS The AUTOMENUS modifier is used with one of the following
- modifiers to toggle the use of automenus.
-
- .ALL Toggle all system automenus on or off.
-
- .VERBNOUN Toggle the verb-noun automenus on or off.
-
- .MODIFIERS Toggle the modifier automenus on or off.
-
- .IDENTS Toggle the IDENTS automenus on or off.
-
- ARCQUALITY All curves on X-CAD such as arcs, ellipses and splines, are
- drawn as a series of connected line segments. The ARCQUALITY
- modifier can be used to adjust the number of segments that
- make up a single curve.
-
- When plotting a drawing on a high resoloution raster plotter,
- the fact that curves are made up of line segments may be
- visible. To obtain the smoothest possible looking curve on
- a plotter, it may be necessary to adjust the arc quality to
- a higher precision to obtain the desired results. This is
- done in 2 stages:
-
- #SELECT ENVIRONMENT ARCQUALITY value ( see below )
-
- will set a new curve precision. Only entities created after
- this command will use the new value though. To change any
- current entities to the new curve precision, the command
-
- #REBUILD GRAPHICS CURVEONLY
-
- must be used. This will rebuild the graphics display list
- for any entities that contain curves to the current
- ARCQUALITY setting.
-
- Note, the ARCQUALITY setting also affects the number of
- locations that are returned when using GENERATE or CHAIN
- in IDENTS.
-
- The ARCQUALITY settings are as follows:
-
- XCOARSE Generates very low precision curves, but as
- these curves are made up of fewer line
- segments the display speed is greatly in-
- creased. When higher precision curves are
- required such as for plotting, the SELECT
- DISPLAY ARCQUALITY / REBUILD GRAPHICS combi-
- nation can be used.
-
- COARSE Generates low precision curves.
-
- MEDIUM Generates medium precision curves. This is
- the default setting.
-
- FINE Generates high precision curves.
-
- XFINE Generates the highest precision curves.
-
- UNDO The UNDO modifier is used with the following modifiers to
- alter the size of the undo buffer used with the UNDO LAST
- command.
-
- .BUFFERSIZE Allows a new undo buffer buffer-size to be entered. The
- modifier is follwed by the new buffer-size in kilobytes, ie
- BUFFERSIZE 16 for a new buffer-size of 16384 bytes.
-
- .LIST List the current size of the undo buffer.
-
- AUTORETURN Allows auto-return to be toggled on or off. Auto-return is
- a feature in IDENTS that is used to automatically move on to
- the next stage of an IDENTS stream when the required number of
- locations of selections has been entered. If AUTORETURN is ON,
- the 'action' key or colon does not need to be used to move on
- to the next stage of the command in IDENTS in cases where it
- is normally required to be entered after a set number of
- locations or selections has been entered.
-
- REDRAW The REDRAW modifier is used to toggle the display of redraws
- in commands such as ECHO LAYER or ECHO DEPTH. If REDRAW is
- selected OFF, no command will redraw the screen except for
- REDRAW DISPLAY. This modifier is usually used in execute
- files to speed up execution.
-
- ECHO The ECHO modifier is used to toggle the display of all
- output to the console window. This modifier is usually
- used in execute files to speed up execution.
-
- FILEREQ The FILEREQ modifier is used to toggle the display of
- file requesters displayed by commands such as OPEN DRAWING
- or DRAW SYMBOL.
-
-